/* 公告样式 */
.announcement {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    animation: slideInFromLeft 1s ease-out;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    height: 300px;
    min-height: 300px;
    max-height: 300px;
    overflow-y: auto;
}

.announcement .date {
    font-size: 1rem;
    color: #505050;
    background-color: rgba(255, 255, 255, 0.25);
    margin: 10px;
    padding: 5px;
    border-radius: 4px;
}

.hidden-announcements {
    display: none;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.pagination button {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 0.25rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
}

.pagination button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}